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refining by melting

См. также в других словарях:

  • Refining (metallurgy) — Refining (as in non metallurgical uses) consists of purifying an impure material, in this case a metal. It is to be distinguished from other processes such as smelting and calcining in that those two involve a chemical change to the raw material …   Wikipedia

  • zone melting — a process of purifying any of various metals and other materials, as germanium or silicon, by passing it in bar form through an induction coil. Also called zone refining. Cf. cage zone melting. [1955 60] * * * Any of a group of techniques used to …   Universalium

  • Zone melting — is a method of separation by melting in which a molten zone traverses a long ingot of impure metal or chemical. In its common use for purification, the molten region melts impure solid at its forward edge and leaves a wake of purer material… …   Wikipedia

  • zone melting — noun see zone refining * * * a process of purifying any of various metals and other materials, as germanium or silicon, by passing it in bar form through an induction coil. Also called zone refining. Cf. cage zone melting. [1955 60] * * * zone… …   Useful english dictionary

  • Vacuum Induction Melting — is a process for melting metal under vacuum conditions using electromagnetic induction. It works by creating electrical eddy currents in the metal which heats the charge to melt it. This process is used for refining of high purity metal and… …   Wikipedia

  • zone-melting — /ˈzoʊn mɛltɪŋ/ (say zohn melting) noun a process of purifying solids whereby a small portion is heated for a short time by moving it through a heated zone or by moving the zone along the solid. The process is employed to obtain very pure metals… …  

  • zone refining — noun Date: 1952 a technique for the purification of a crystalline material and especially a metal in which a molten region travels through the material to be refined, picks up impurities at its advancing edge, and then allows the purified part to …   New Collegiate Dictionary

  • zone melting — noun see zone refining …   New Collegiate Dictionary

  • zone refining — noun zone melting …   Wiktionary

  • zone melting — noun A technique used to purify a metal, semiconductor or other solid in which a heating system slowly causes a series of molten zones to traverse the solid, leaving purer material behind it …   Wiktionary

  • electroslag refining — a specialized steel making process in which a rolled or a cast ingot in the form of an electrode is remelted in a water cooled copper mold. The melting is activated by resistive heat generated in a conductive slag. The resulting product has a… …   Mechanics glossary

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